Generate a prototype ui of a vr scene building program. the emphasis should be on the main 1st person pov of someone in ancient egypt, with the blender x, y, z axis switcher on the right-hand corner. include the blender 3d assets panel with a pyramid, a pharaoh, and a tablet as assets. illustrate the drag-and-drop feature by showing a user seamlessly selecting, moving, and placing these assets into a vr scene